// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2022 Rockchip Electronics Co. Ltd.
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*
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* Author: Guochun Huang <hero.huang@rock-chips.com>
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*/
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#include "hal/cru_api.h"
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#include <linux/kernel.h>
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#include <linux/iopoll.h>
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#include "rkx110_x120.h"
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#include "rkx110_reg.h"
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#include "serdes_combphy.h"
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#define SOFT_RST 0x0000
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#define HS_CLK_SOFT_RST BIT(1)
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#define CFG_CLK_SOFT_RST BIT(0)
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#define PHY_RCAL 0x0004
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#define RCAL_DONE BIT(17)
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#define RCAL_OUT(x) UPDATE(x, 16, 13)
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#define RCAL_CTL(x) UPDATE(x, 12, 5)
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#define RCAL_TRIM(x) UPDATE(x, 4, 1)
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#define RCAL_EN BIT(0)
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#define ULP_RX_EN 0x0008
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#define VOFFCAL_OUT 0x000c
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#define CSI_CLK_VOFFCAL_DONE BIT(29)
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#define CSI_CLK_VOFFCAL_OUT(x) UPDATE(x, 28, 24)
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#define CSI_0_VOFFCAL_DONE BIT(23)
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#define CSI_0_VOFFCAL_OUT(x) UPDATE(x, 22, 18)
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#define CSI_1_VOFFCAL_DONE BIT(17)
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#define CSI_1_VOFFCAL_OUT(x) UPDATE(x, 16, 12)
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#define CSI_2_VOFFCAL_DONE BIT(11)
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#define CSI_2_VOFFCAL_OUT(x) UPDATE(x, 10, 6)
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#define CSI_3_VOFFCAL_DONE BIT(5)
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#define CSI_3_VOFFCAL_OUT(x) UPDATE(x, 4, 0)
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#define CSI_CTL01 0x0010
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#define CSI_CTL1(x) UPDATE(x, 31, 16)
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#define CSI_CTL0(x) UPDATE(x, 15, 0)
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#define CSI_CTL23 0x0014
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#define CSI_CTL3(x) UPDATE(x, 31, 16)
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#define CSI_CTL2(x) UPDATE(x, 15, 0)
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#define CSI_VINIT 0x001c
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#define CSI_LPRX_VREF_TRIM UPDATE(x, 23, 20)
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#define CSI_CLK_LPRX_VINIT(x) UPDATE(x, 19, 16)
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#define CSI_3_LPRX_VINIT(x) UPDATE(x, 15, 12)
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#define CSI_2_LPRX_VINIT(x) UPDATE(x, 11, 8)
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#define CSI_1_LPRX_VINIT(x) UPDATE(x, 7, 4)
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#define CSI_0_LPRX_VINIT(x) UPDATE(x, 3, 0)
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#define CLANE_PARA 0x0020
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#define T_CLK_TERM_EN(x) UPDATE(x, 15, 8)
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#define T_CLK_SETTLE(x) UPDATE(x, 7, 0)
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#define T_HS_TERMEN 0x0024
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#define T_D3_TERMEN(x) UPDATE(x, 31, 24)
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#define T_D2_TERMEN(x) UPDATE(x, 23, 16)
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#define T_D1_TERMEN(x) UPDATE(x, 15, 8)
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#define T_D0_TERMEN(x) UPDATE(x, 7, 0)
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#define T_HS_SETTLE 0x0028
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#define T_D3_SETTLE(x) UPDATE(x, 31, 24)
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#define T_D2_SETTLE(x) UPDATE(x, 23, 16)
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#define T_D1_SETTLE(x) UPDATE(x, 15, 8)
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#define T_D0_SETTLE(x) UPDATE(x, 7, 0)
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#define T_CLANE_INIT 0x0030
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#define T_CLK_INIT(x) UPDATE(x, 23, 0)
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#define T_LANE0_INIT 0x0034
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#define T_D0_INIT(x) UPDATE(x, 23, 0)
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#define T_LANE1_INIT 0x0038
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#define T_D1_INIT(x) UPDATE(x, 23, 0)
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#define T_LANE2_INIT 0x003c
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#define T_D2_INIT(x) UPDATE(x, 23, 0)
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#define T_LANE3_INIT 0x0040
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#define T_D3_INIT(x) UPDATE(x, 23, 0)
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#define TLPX_CTRL 0x0044
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#define EN_TLPX_CHECK BIT(8)
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#define TLPX(x) UPDATE(x, 7, 0)
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#define NE_SWAP 0x0048
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#define DPDN_SWAP_LANE(x) UPDATE(1 << x, 11, 8)
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#define LANE_SWAP_LAN3(x) UPDATE(x, 7, 6)
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#define LANE_SWAP_LANE2(x) UPDATE(x, 5, 4)
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#define LANE_SWAP_LANE1(x) UPDATE(x, 3, 2)
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#define LANE_SWAP_LANE0(x) UPDATE(x, 1, 0)
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#define MISC_INFO 0x004c
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#define ULPS_LP10_SEL BIT(1)
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#define LONG_SOTSYNC_EN BIT(0)
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#define GRF_MIPI_RX_CON0 0x0000
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#define RXCK_RTRM(x) HIWORD_UPDATE(x, GENMASK(15, 12), 12)
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#define LVDS_RX3_PD(x) HIWORD_UPDATE(x, BIT(10), 10)
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#define LVDS_RX2_PD(x) HIWORD_UPDATE(x, BIT(9), 9)
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#define LVDS_RX1_PD(x) HIWORD_UPDATE(x, BIT(8), 8)
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#define LVDS_RX0_PD(x) HIWORD_UPDATE(x, BIT(7), 7)
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#define LVDS_RXCK_PD(x) HIWORD_UPDATE(x, BIT(6), 6)
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#define LANE3_ENABLE(x) HIWORD_UPDATE(x, BIT(5), 5)
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#define LANE2_ENABLE(x) HIWORD_UPDATE(x, BIT(4), 4)
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#define LANE1_ENABLE(x) HIWORD_UPDATE(x, BIT(3), 3)
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#define LANE0_ENABLE(x) HIWORD_UPDATE(x, BIT(2), 2)
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#define PHY_MODE(x) HIWORD_UPDATE(x, GENMASK(1, 0), 0)
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#define GRF_MIPI_RX_CON2 0x0008
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#define RXCK_CTL_5(x) HIWORD_UPDATE(x, BIT(11), 11)
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#define DDR_CLK_DUTY_CYCLE(x) HIWORD_UPDATE(x, GENMASK(10, 8), 8)
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#define BUS_WIDTH_SELECTION(x) HIWORD_UPDATE(x, GENMASK(7, 5), 5)
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#define RXCK_CTL_2(x) HIWORD_UPDATE(x, BIT(4), 4)
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#define RXCK_CTL_1(x) HIWORD_UPDATE(x, GENMASK(2, 1), 1)
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#define RXCK_CTL_0(x) HIWORD_UPDATE(x, BIT(0), 0)
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#define GRF_MIPI_RX_CON4 0x0010
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#define GRF_MIPI_RX_CON5 0x0014
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#define GRF_MIPI_RX_CON6 0x0018
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#define GRF_MIPI_RX_CON7 0x001c
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#define GRF_SOC_STATUS 0x0080
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#define DLL_LOCK BIT(24)
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#define LVDS1_MSBSEL(x) HIWORD_UPDATE(x, BIT(5), 5)
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#define LVDS0_MSBSEL(x) HIWORD_UPDATE(x, BIT(2), 2)
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static void
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rkx110_combrxphy_dsi_timing_init(struct rk_serdes *ser, enum comb_phy_id id)
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{
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}
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static void rkx110_combrxphy_dsi_power_on(struct rk_serdes *ser, enum comb_phy_id id)
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{
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struct hwclk *hwclk = ser->chip[DEVICE_LOCAL].hwclk;
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struct rkx110_combrxphy *combrxphy = &ser->combrxphy;
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struct i2c_client *client = ser->chip[DEVICE_LOCAL].client;
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u32 val = 0;
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u32 grf_base;
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switch (id) {
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case COMBPHY_0:
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hwclk_set_rate(hwclk, RKX110_CPS_CFGCLK_MIPIRXPHY0, 100 * USEC_PER_SEC);
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dev_info(ser->dev, "RKX110_CPS_CFGCLK_MIPIRXPHY0:%d\n",
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hwclk_get_rate(hwclk, RKX110_CPS_CFGCLK_MIPIRXPHY0));
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break;
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case COMBPHY_1:
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hwclk_set_rate(hwclk, RKX110_CPS_CFGCLK_MIPIRXPHY1, 100 * USEC_PER_SEC);
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dev_info(ser->dev, "RKX110_CPS_CFGCLK_MIPIRXPHY1:%d\n",
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hwclk_get_rate(hwclk, RKX110_CPS_CFGCLK_MIPIRXPHY1));
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break;
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default:
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break;
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}
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serdes_combphy_get_default_config(combrxphy->rate,
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&combrxphy->mipi_dphy_cfg);
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switch (ser->dsi_rx.lanes) {
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case 4:
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val |= LANE3_ENABLE(1);
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fallthrough;
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case 3:
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val |= LANE2_ENABLE(1);
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fallthrough;
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case 2:
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val |= LANE1_ENABLE(1);
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fallthrough;
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case 1:
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default:
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val |= LANE0_ENABLE(1);
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break;
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}
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grf_base = id ? RKX110_GRF_MIPI1_BASE : RKX110_GRF_MIPI0_BASE;
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ser->i2c_write_reg(client, grf_base + GRF_MIPI_RX_CON0,
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PHY_MODE(COMBRX_PHY_MODE_VIDEO_MIPI) | val);
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rkx110_combrxphy_dsi_timing_init(ser, id);
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}
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static void rkx110_combrxphy_dsi_power_off(struct rk_serdes *ser, enum comb_phy_id id)
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{
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struct i2c_client *client = ser->chip[DEVICE_LOCAL].client;
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u32 grf_base;
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grf_base = id ? RKX110_GRF_MIPI1_BASE : RKX110_GRF_MIPI0_BASE;
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ser->i2c_write_reg(client, grf_base + GRF_MIPI_RX_CON0,
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LANE3_ENABLE(0) | LANE2_ENABLE(0) |
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LANE1_ENABLE(0) | LANE0_ENABLE(0));
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}
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static void rkx110_combrxphy_lvds_power_on(struct rk_serdes *ser, enum comb_phy_id id)
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{
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struct i2c_client *client = ser->chip[DEVICE_LOCAL].client;
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u32 grf_base = id ? RKX110_GRF_MIPI1_BASE : RKX110_GRF_MIPI0_BASE;
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u32 val;
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int ret;
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ser->i2c_write_reg(client, grf_base + GRF_MIPI_RX_CON0,
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LVDS_RXCK_PD(0) | PHY_MODE(COMBRX_PHY_MODE_VIDEO_LVDS));
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ser->i2c_write_reg(client, grf_base + GRF_MIPI_RX_CON2,
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BUS_WIDTH_SELECTION(7) | RXCK_CTL_2(1) |
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RXCK_CTL_1(1) | RXCK_CTL_0(0));
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ser->i2c_write_reg(client, SER_GRF_SOC_CON2,
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id ? LVDS1_MSBSEL(0) : LVDS0_MSBSEL(0));
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ser->i2c_write_reg(client, grf_base + GRF_MIPI_RX_CON4, 0xffff0f08);
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ser->i2c_write_reg(client, grf_base + GRF_MIPI_RX_CON5, 0xffff0f08);
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ser->i2c_write_reg(client, grf_base + GRF_MIPI_RX_CON6, 0xffff0f08);
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ser->i2c_write_reg(client, grf_base + GRF_MIPI_RX_CON7, 0xffff0f08);
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ret = read_poll_timeout(ser->i2c_read_reg, ret,
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!(ret < 0) && (val & DLL_LOCK),
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0, MSEC_PER_SEC, false, client,
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grf_base + GRF_SOC_STATUS, &val);
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if (ret < 0)
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dev_err(ser->dev, "DLL is not locked\n");
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ser->i2c_write_reg(client, grf_base + GRF_MIPI_RX_CON0,
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LVDS_RX3_PD(0) | LVDS_RX2_PD(0) |
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LVDS_RX1_PD(0) | LVDS_RX0_PD(0));
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}
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static void rkx110_combrxphy_lvds_power_off(struct rk_serdes *ser, enum comb_phy_id id)
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{
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struct i2c_client *client = ser->chip[DEVICE_LOCAL].client;
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u32 grf_base = id ? RKX110_GRF_MIPI1_BASE : RKX110_GRF_MIPI0_BASE;
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ser->i2c_write_reg(client, grf_base + GRF_MIPI_RX_CON0,
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LVDS_RX3_PD(1) | LVDS_RX2_PD(1) |
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LVDS_RX1_PD(1) | LVDS_RX0_PD(1));
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}
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static void rkx110_combrxphy_lvds_camera_power_on(struct rk_serdes *ser, enum comb_phy_id id)
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{
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}
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static void rkx110_combrxphy_lvds_camera_power_off(struct rk_serdes *ser, enum comb_phy_id id)
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{
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}
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void rkx110_combrxphy_power_on(struct rk_serdes *ser, enum comb_phy_id id)
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{
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struct rkx110_combrxphy *combrxphy = &ser->combrxphy;
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switch (combrxphy->mode) {
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case COMBRX_PHY_MODE_VIDEO_MIPI:
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rkx110_combrxphy_dsi_power_on(ser, id);
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break;
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case COMBRX_PHY_MODE_VIDEO_LVDS:
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rkx110_combrxphy_lvds_power_on(ser, id);
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break;
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case COMBRX_PHY_MODE_LVDS_CAMERA:
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rkx110_combrxphy_lvds_camera_power_on(ser, id);
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break;
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default:
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break;
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}
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}
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void rkx110_combrxphy_power_off(struct rk_serdes *ser, enum comb_phy_id id)
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{
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struct rkx110_combrxphy *combrxphy = &ser->combrxphy;
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switch (combrxphy->mode) {
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case COMBRX_PHY_MODE_VIDEO_MIPI:
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rkx110_combrxphy_dsi_power_off(ser, id);
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break;
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case COMBRX_PHY_MODE_VIDEO_LVDS:
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rkx110_combrxphy_lvds_power_off(ser, id);
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break;
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case COMBRX_PHY_MODE_LVDS_CAMERA:
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rkx110_combrxphy_lvds_camera_power_off(ser, id);
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break;
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default:
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break;
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}
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}
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void rkx110_combrxphy_set_rate(struct rk_serdes *ser, u64 rate)
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{
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struct rkx110_combrxphy *combrxphy = &ser->combrxphy;
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combrxphy->rate = rate;
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}
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void rkx110_combrxphy_set_mode(struct rk_serdes *ser, enum combrx_phy_mode mode)
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{
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struct rkx110_combrxphy *combrxphy = &ser->combrxphy;
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combrxphy->mode = mode;
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}
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